Genomics

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Genome-wide maps of nucleosome positions in Saccharomyces strains bearing heterologous DNA on yeast artificial chromosomes


ABSTRACT: We identify the cis and trans determinants of nucleosome positioning using a functional evolutionary approach involving S. cerevisiae strains containing large genomic regions from other yeast species. In a foreign species, nucleosome depletion at promoters is maintained over poly(dA:dT) tracts, whereas internucleosome spacing and all other aspects of nucleosome positioning tested are not. Interestingly, the locations of the +1 nucleosome and RNA start sites shift in concert. Strikingly, in a foreign species, nucleosome-depleted regions occur fortuitously in coding regions, and they often act as promoters that are associated with a positioned nucleosome array linked to the length of the transcription unit.

ORGANISM(S): Saccharomyces cerevisiae

PROVIDER: GSE39011 | GEO | 2012/07/01

SECONDARY ACCESSION(S): PRJNA169603

REPOSITORIES: GEO

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